I just spoke with Lunati about these lifters (called their tech line), and he had this to say:

1) Roller rockers make more noise than fulcrum rockers (I have rollers)
2) aluminum body rockers make much more noise than steel (i have aluminum)
3) cast aluminum valve covers cause any valvetrain noise to sound louder (I have cast alum valve covers).

His opinion is that the noise was normal (he did not listen to the video), and nothing needs to be done. He also re-iterated that 1/2 turn max preload on these lifters is good, more is dangerous with the high lift cam.


hmmm, maybe I'll just run it and see how it goes..............